17 Apr
2014
17 Apr
'14
10:16 p.m.
On Thursday 17 April 2014 18:12:12 Hans Wilmers did opine:
On 04/16/2014 02:54 PM, Gene Heskett wrote:
Gack! I hate it when I miss the obvious stuffs. So 258 or 259 *3600 for
the speed ratio in round figures. Round figures light is 930,600 times
faster than sound.
Definitely my bad. Open reply, insert foot fresh from mouth. Duh!
Sound is nominally 720 miles per hour. Rather
leisurely IOW.
A perfect cable is C speed, 258 times faster. But cable (coaxial)
actually range in speeds between 66% of C for home usable cables, to
around 98% of C for 9" diameter high power broadcast stuff, C being
186,272 miles per second in a vacuum. Thats 298,035.2 kilometers per
second for the metric folks here.
Just a tiny comment to the speed ratio: There is a missing factor
seconds/hour. Light is travelling in the magnitude of one million faster
than sound in air.
/ Hans
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Cheers, Gene
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